Imputation flag for age (IFAGEP)

Latest release
Census of Population and Housing: Census dictionary
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Reference period
2021

Definition

This variable indicates if a person's age was imputed. Imputation is a statistical process for predicting values where no response was provided to a question and a response could not be derived.

See also, Age (AGEP).

Scope

All persons

Categories

CodeCategory
1Age not imputed
2Age imputed

Number of categories: 2

Question(s) from the Census form

What is the person’s date of birth and age?

What is the person’s date of birth and age?
What is Person 1's date of birth? If date of birth is not known, please select 'Don't know date of birth' and provide Person 1's age. More information Day Month Year OR Don't know date of birth Age

Example

Age example
What is Person 1's date of birth? If date of birth is not known, please select 'Don't know date of birth' and provide Person 1's age. More information Day Month Year OR Don't know date of birth (selected response) Age years

Example

Age example
What is Person 1's date of birth? If date of birth is not known, please select 'Don't know date of birth' and provide Person 1's age. More information Day Month Year 18 March 1993 OR Don't know date of birth Age 28 years

More information

Additional information relating to the question on: What is the person’s date of birth and age?
What is Person 1's date of birth? If date of birth is not known, please select 'Don't know date of birth' and provide Person 1's age. More information It is important to note: •Date of birth is the date that the person was born. •Age is required only if the person's date of birth is not known. Please report age at Census night – Tuesday 10 August 2021. If the person is less than one year old and their date of birth is not known, enter '0' in the age box.

How this variable is created

When age is imputed this variable is coded to ‘02 Age imputed’. See Age (AGEP) for methods on how age is imputed.

History and changes

No changes have been made for 2021.

Data use considerations

Imputation flag for age (IFAGEP) can be used to identify how many respondents’ age was imputed at different geographical levels.

Using the Imputation Flag for Age (IFAGEP), the non-response rate for Age was 4.4% in 2021. This is a decrease from 5.6% in 2016. For more information on imputation, see Census Methodology.

Related variables and glossary terms

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